Sheet fastener



'June 18, 1945. P, VAN sl'rTERT SHEET FASTENER' Filed Dec. 5. 1942INVENTOR PAUL VAN 'SITTERT Patented June 18, 1946 UNITE-o STATE s PATENTOFFICE SHEET FASTENER Paul van fSittert, Shaker Heights, Ohio, 'assigner'to' The vCleveland Pneumatic Tool Company, -ClevelandyOhim acorporation of Ohio yAspiration"Imemlm 3, 1942, serial No. 467,707

sheets vin'superposecl relation preparatory to riv 'eting orthe like.

An important object of the invention resides-in the provision of Yafastener or temporary rivet which may be readily applied to or removedfrom the work, and constituting a simple assembly which is strong,durable and eicient.

Another object of the invention is to provide a fastener of the abovecharacter which includes a lhousing adapted to rest on the upper face ofthe sheets to be riveted, alpin mounted for slidable movement withinthe/housing and insertable through aligned perforations of saidsheetsfor maintaining themin aligned position, and means carried by thepin andv additional associated mechanism carried by the housing Aforlocking said pin against axial movement relative to the housing afterthefastener lhas been `applied'to the work* f A further object of theinvention is to provide a temporary fastenerl which does not require-theuse of special tools for .insertingor removing the same from theperiorated:plates or'sheets to be riveted. f' j 2 AOther objects andadvantages more or less an'- cillary to the foregoing'reside inthespecific con.- s'truction and aggroupment o'f'the elements peculiar tothis structure, will: become apparent from -a more complete examinationnftnis'speci` cation. r

y In the drawing which illustrates the invention:

Fig. '1, is a perspective view of an improved fas` tener. embodying thefeatures o'f the Apresent invention. l

V1ig...2 is aside elevational view, partly in section', of theimprovedfastenershown in the position assumed during the rst step of itsapplica- :tion tozthework. Ii

'Fig 3f. -is a; Viewv similar to;fFig.z- 2,; :illustrating the positionv:assumed bythe fastener .duringlthe second step of its application tothe work.

' Fig. iis arside elevational@view ofthefastener .in clamped position onthe work, fthe ,locking means having been actuated so as to holdazthestem against axialfmovement relative -to v.the

housing. f'

Flig.5.is la detailsectional View taken :substan- 'tiallyonJineE- ofFig.- #if Referring to Vthe drawing for a .more detailed descriptionthereof, va temporary fiastener: einbodying'zthe:features of thepresentinvention is generally Lfdesignated in `the* kseveral .views fby :theroterende numeral .a8 amdrcomprisesaa. substantial- 9 Claims. (Cl.l.S5-5) l is formed a 'cylindrical central 'bore II.

l*within-the Ahousing 9 adjacentpthe bottom wall lyl cyllndriccup-'shaped housing 9 having its lower end formed by a cross-wall orbase I0 in which A pin or stem I2 is mounted .for slidable movementwithin the housing 9, the `lower end thereof ex` tending through thecentral bore Il. The stem -I 2 is split longitudinally for a portion ofits length to provide appair of sections I3 and I4 and each of saidsections is Vformed with an enlarged end li'thatis preferably'tapered tofacilitate insertion vthrough the aligned holes I G of the superposedysheetsI'I and I8 Whichare to be riveted. The enlarged ends I5 are.adapted to engage the lower vsheet I8 and in conjunction with thehousing 9 will Yhold the `sheets I'Iv and I8 in lperfect per- `foratealignment Ias, illustrated in Figs. 3 and 4 ofthe drawing. Y

w-"Besting on the 'base Il) Aand projecting through. y 'the central'bore'I I thereof is 'aT-shaped spread-f er I9, Saidspreader being disposedbetweenthe sections I3 and I4 in such a manner that the combinedAdiameter of the sections Il.V and I4 and spreader "I9 is equal to orslightly smaller than the diameterof the rivet holes I6. An annularmember vin the-form of a ring 20 is positioned thereof, vsaid ringresting upon the head of the Tshapedspreader 'I9 for retaining the samein.

position. I

Positioned substantially `intermediate thev ends f Y of the' stem I2isa'plate'ZI thatis preferably rec- "ing"9.

tangular shaped; said platevbeing in part fric- "tionally held onthestem I2; While the plate 2l is capable `oi'v'ertical movementrelative t0 the stem `I2 iifmanual'pressure vis exerted on either sidethereof', .saidrplate Will normallybe held stationary sorthat thestem isfree to be moved -axially. ofthe housing i9. zAS1-Will be hereinafterdescribed, the plate 2| is adaptedto be moved at an vangle relativetothe stein whereby's'aid stem will be held againstmovement relative tothe vhous- The upper an enlarged head 212 and interposed between said1head and the'upper face of the plate 2'I, is a compression spring 23for constantly urging the stem I2 upwardly relative to the housing 9.The spring 23 also functions to retain the sheets in clamped engagementbetween the bottom wall I I ofthe housing 9 andthe enlarged ends I5which positionisshown in Figs. 3 and-'4 of the drawing.

fia-length of wire 2=lhas its ends secured in diametrioally opposedopenings y2S formed inthe housing i!) 'as vmore particularlyfY shown :in4 Fig. 5; The 'intermediate k:portionrof wire .24 extends fendof thestem I2 isformed with 3 upwardly from the ends 25 along the stem onopposed sides thereof and is suitably twisted to form a loop or coil 21,it being understood that the loops on each side of the stem areidentical in formation and position. The single length of wire 24.provides in effect a leg 28 oneach side of the stem and theintermediate portion previously referred to in which the loop 21 isformed will hereinafter be termed the leg'v of the wire. Each leg 28 iscurved outwardly from the loop 21 as indicated at 29 and then is bentinwardly to form a shoulder 3U and from the shoulder .the

gaged and swung outwardly away from the stem I2 until the shoulders 30engage the ears 33.

leg extends upwardly substantially parallel to "i the stem I2 for apredetermineddistance before curving outwardly in the shape of a U asindicated at 3| to provide a means adapted to be engaged for moving theplate 2| so asto lock the stem l2 relative to the housing 9.

One end 32 of the plate 2| is formed with'ears I yengaged by an ear 33as clearly shown in Figs.

1 and 2. l Y

The opposite end of the .plate 2| is suitably rolled to provide ahousing 34, said housing supporting a length of wire 35 whose ends areheld within the loops or coils 21. That area of the wire 35 between thecoils 21 and housing 34 is bent substantially in the shape of a U asindicated at 36 whereby Yupon movement of the wire.,

24 toward the stem I2 through -the U-shaped handle portion 3|,suflicient pressure will be exerted on the end 34 of the member 3| tourge the end 34 upwardly at an angle relative to the stem I2 for lockingsaid stem relative to the..

housing 9.

Referring to the operation of the device, let it be assumed that thework to be riveted consists of the two superposed sheets I1 and I8.Manual pressure is rst exerted downwardly on the stern;-

I2 through its head 22 to project the sections- I3 in that position thesections I3 and I4 are with- Simultaneously therewith the length of wire35 4will be moved toward the stem thereby lowering the raised end 34 ofthe plate -until it assumes its normal horizontal position on the stemI2. The stem I2 -isjthen free to be manually urged downwardlycompressing the spring 23 and while held drawn from the hole I6.

Although the foregoing description is necesand I4 beyond the spreaderI9;A The enlarged endsv I5, as contact is made with the walls of theholes I6, will flex inwardly and thereby are free to be inserted throughthe holes I6 until the base I I rests upon the face of the uppersheetI1. As is to be understood, when initially` applying the fastener to thesheets, the plate 2| and lengths of wire 24 and 35 will be in theposition shown in Figs. 1, 2 and 3. Upon releasing manual pressure onthe stem |2,'the spring 23 Will urge said stem upwardly until theenlarged ends I5 engage the lower sheet of the work. as .illustrated inFig. 3. In this position the tension of the spring 23 will serve tofirmly clamp the sheets. Hand I8 between the bottomwall of the housing 9and the enlarged ends I5. The operator next engages the U-shaped portion3| of the length of wire 24 and by manual'pressure urges the same towardthe stem, or from the position shown in Fig. 3 to that shown in Fig. 4.As the wire is moved to the Fig. 4 position, the shoulders 30 arereleased from the ears 33 and the inward movement of the legs 28 andparticularly the loops 21 thereof, will cause the length of wire 35 tobe moved 'outwardly away from the stem I2 thereby forcing the end 34 ofthe plate 2| upwardly at an angle vrelative to the stem I2 so that saidplate in effect, locks the stem I2 against axial movement in eitherdirection relative ;to the housing 9. With the claimed. f

pletely set forth the invention, it is to be understood that thespecific terminology is not intended to be restrictive or confining andit is to be further understood that rvarious rearrangements of parts andmodifications of structural detail may be resorted to without departingfrom the scope or spirit of the invention as herein `I claim:

1. A device for temporarily securing at least two perforated sheets withtheir perforations in vertical alignment preparatory to rivetingcomprising, a housing adapted to rest on the upper sheet, a pin mountedfor slidahle movement within said housing and .insertable throughaligned perforations of said sheets for maintaining them in alignedposition, means on the inserted end of 'said' pin for engagement withthe underside of the lower sheet, means on said pin adapted to be .movedat an angle relative thereto for holding said pin. against axialmovement relative to said housing, and spring means between said secondmentioned means and the head of said pin for clamping the sheets betweensaid housing and said iirst mentioned means.

2. A device for temporarily securing at least two perforated sheets withtheir perforations in vertical `alignment preparatory to rivetingcomprising, a housing adapted to' rest on the upper sheet, a. pinmounted for slid-able movement within said housing and insertablethrough aligned perforations of said sheets for maintaining them inaligned position, means on the inserted end of said pin for engagementwith the underside of the lower sheet, means for locking said pinrelative to said housing, said means including a plate disposedtransversely of said pin and capable of movement relative thereto, aspring active between said plate and the head of said pin for clampingthe sheets between said housing vand said first mentioned means and forlocking vsaid lplate on said pin, whereby said pin is held againstaxial'movement relative to said housing.

3. A device for temporarily securing at least two perforated sheets withtheir perforations in vertical alignment preparatory to rivetingcomprising, a housing adapted to rest on the upper sheet, a pin mountedfor slidable movement within said housing and insertable throughalignedperforations of said sheets for maintaining them in aligned position,means on' the inserted end of said pin for engagement with the undersideof the lower sheet, means for locking said pin relative to saidvhousing-'said means comprising a member disposed transversely ofsaid'pin and capable of movement relative thereto, a" spring said plateand the head of said pin for clamping the sheets between said housingand said first mentioned means and for moving said plate at an anglerelative to said pin, whereby said pm manually released for permittingsaid member to is held against axial movement relative to said be movedat an angle relative to said pin, whereby said pin is held against axialmovement relative to said housing.

4. A device for temporarily securing at least two perforated sheets withtheir perforations in vertical alignment preparatory to rivetingcomprising, a housing adapted to rest on the upper sheet, a pin mountedfor slidable movement within said housing and insertable through alignedperforations of said sheets for maintaining them in aligned position,means on the inserted end of said pin for engagement with the undersideof the lower sheet, means for locking said pin relative to said housing,said means comprising a member disposed transversely of said pin andcapable of movement relative thereto. a spring active between saidmember and the head of said pin for clamping the sheets between saidhousing and said first mentioned means, and latching means adapted to bemanually released for permitting said member to be moved at an anglerelative to said pin to cause said member to bind upon the pin wherebysaid pin is held against axial movement relative to said housing.

5. A device for temporarily securing at least two perforated sheets withtheir perforations in vertical alignment preparatory to rivetingcomprising, a housing adapted to rest on the upper sheet, a pin mountedfor slidable movement within said housing and insertable through alignedperforations of said sheets for maintaining them in aligned position,means on the inserted end of said pin for engagement with the undersideof the lower sheet, means for locking said pin relative to said housing,said means comprising a plate disposed transversely of said pin andcapable of movement relative thereto, a spring active between said plateand the head of said pin for clamping the sheets between said housingand said rst mentioned means, and latching means adapted to be manuallyreleased for permitting said plate to be moved relative to said pin,whereby said pin is held against axial movement relative to saidhousing. l

6. A device for temporarily securing at least two perforated sheets withtheir perforations in vertical alignment preparatory to rivetingcomprising, a housing adapted to rest on the upper sheet, a pin mountedfor slidable movement within said housing and insertable through aligned55 perforations of said sheets for maintaining them in aligned position,means on the inserted 'end of said pin for engagement with the undersideof the lower sheet, means for locking said pin relative to said housing,said means including a substantially rectangular shaped plate disposedtransversely of said pin and capable of limited movement relativethereto, a spring active between housing.

7. A device for temporarily securing at least two perforated sheets withtheir perforations in vertical alignment preparatory to riveting com- 10prising, a housing adapted to rest on the upper sheet, a pin mounted forslidable movement within said housing and insertable through alignedperforations of said sheets for maintaining them in aligned position,means on the inserted end 15 of said pin for engagement with theunderside of said stem having engagement with one end oiY said member,said last named means comprising a latch for engagement with the otherend of said member to hold it at right angles to said pin, said latchbeing manually releasable to permit said member to be swung to anangular position relative to said pin, whereby said pin is held againstaxial movement relative to said housing. 8. A plate holder of thecharacter described, comprising a perforated housing and a pin slidabletherethrough having a head on one end and a work engaging enlargement onits opposite end, mounting means anchored in the housing, a plate hingedto said mounting means having a perforation therethrough looselysurrounding said pin when the plate stands at right angles to the pin, aspring between said plate and the head of said pin for drawing saidhousing and said enlargement toward each other when the plate is held atright angles to the pin, said spring being adapted to swing said platewhen relieved of constraint into an angular position relative to the pinfor causing it to grip the pin by a binding action.

9. A plate holder of the character described, comprising a perforatedhousing and a pin slidable therethrough having a head on one end and awork engaging enlargement on its opposite end,

means for drawing said housing and pin enlargement toward each othercomprising a member anchored in the housing and carrying a hinged plateprovided with a perforation larger than the pin through which the pinextends, said means also including a latch for holding the plate atright angles to the pin and a spring between said plate and the head ofthe pin, whereby when said holder is in plate gripping position, saidlatch may be released permitting said plate o to swing upon its hingeinto position to bind upon

